The popSLATE team says that you can use the low-power, always-on screen to show a customizable image to decorate the back of your phone. For some more useful applications, the second screen can also show notifications, sports scores, maps, lists, notes, and maybe even an eBook.

On top of that built-in functionality, the company is also building an open API for the second screen that developers can use to create third-party apps.

The case will use the Lightning connector for both power and data exchange, and you control the second screen through a popSLATE app on the iPhone side. The company also says that case can utilize the phone’s accelerometer for some things like double-tapping the back to cycle through images or to accept “Pops” from your friends.

If you want your own E-Ink-equipped iPhone 5 case; the popSLATE cases currently go for $99 in black and white colors.